Pulsating pump.



PATENTBD APR. 2a, 1908. 'A. P. BRUSH.

PULSATING PUMP;

. APPLIUATION FILED AUG; 18, 1905- 7 v ,Z L\\\ I E? Z in 5 7:7 62" u [on C n ("fun 17 7 W f,

UNITED snares PATENT OFFICE.

ALANSON P. BRUSH, OF DETROIT, MICHIGAN.

rULsArme Puma,

Specification of Letters Patent.

Patented April '28, 1908.

npplieation filed au ust 18, 1905. Serial No. 274,776.

To all whom it may concern:

Be it known that I, ALANSON I. BRUSH, a

. citizen of the United States, residing at Deform a part of this specification;

My present invention is designed'to provide a pulsating pump for various uses, the

same being of economical construction and of superiorutility. j d I My improved pum is especially adapted for use upon automo iles equip ed with m-' temal combustion engines, butt e invention ma be appliedalso to marine engines, as

wel as for various other purposes.

I will describe my invention as employed in connection with an internal combustion 'en ine. I

y invention consists of the construction, combinationand arrangement of parts hereinafter specified and claimed and illustrated in the accompanying drawings in which Figure 1 is a viewin section on line .1-1, Fig. 2.' Fig. 2 is a view in section on the line 22, Fig. 1. I

In carrying out my invention, as illustrated in the accompanying drawings, it and I) represent the lower and upper plates of a pulsating pump constructed with a chamber 0 between their peripheries, the capacity of the chamber being shown somewhat exag gerated, relatively, in Fig 1 of the drawings submitted herewith. The

concaved on their adj acentfaces to form said chamber. Within' said chamber is located plate a is provided with a channel c leading to the chamber 0, with which is connected a pipe d employed to connect the said chamber of the pump with the combustion chamber of the engine. The plate I) is provided with a channel 9 leading to the'chamber c, with the outer end of which is connected a channeled valve case or fitting f. The discharge end it of said case or fitting is constructed to be connected with a discharge ipe (not shown), and is provided witha va lve seat i and a valve to seat thereupon, as a ball 'valve 1'. The opposite or. suction endk of said valve case or fitting is constructed with a chamber I to adhere.

plate. a is shown centrally concaved and the plate I) centrally pressure, 't. e., by the pulsations from the explosion chamber of the engine.

My invention aims to so construct the plates a and b that there will be no suction of the diaphragm wupon the adjacent faces of the plates to cause the adjacent surfaces thereof This I obviously accomplish by channeling the adjacent surfaces of said plates, as shown and described. I would have it understood, of course, that I do not limit myself to the exact form of channeling the adjacent surfaces of said plates herewith specified and illustrated, as the adjacent surfaces thereof might be variously channeled or grooved to accomplish'the desired object. A pump so constructed can be used for pumping liquid or air. It may be employed, for example, as a fuel pump topump fuel to the engine;

upon the tank; or as a water pump to circulate water through the water jacket of the engine. In a marine en e it may be used, for example, instead of t e ordinary pump.

A pum ,.so constructed will work. with the engine w en running at full load or when the engine is running with no load.

It'will readily be understood that an explosion in .the ex losion chamber of the engine forces the 'aphra m to its extreme position, and that the e aust stroke allows the diaphragm to recover itself.

It is obvious that the diaphragm actuated to the full pressure of an explosion would be soon destroyed unless the plates were so formed. that it could not be forced beyond its elastic limit. With the plates formed as within its elastic limit it is 1m ossible for an explosion to strain the diap agm in any way, even though it is made thin enough to tuation of pressure.-

My invention aims to'provide a pulsating pum wherein the operation ofthe pulsating f iaphragm be well within-its elastic imit.

above described so as to keep the diaphragm be actuated by a very light pulsation or fluc-' In the operation of the device it will be- The pulsatingldiaphragm at, it will be understood, is actuated by the pulsations of evident that the suction stroke of the engine will unseat the valve n, drawing'in liquid or air, as the case may be, into the channel g, v vhile the opposite pulsation of the en- .What I claim as my invention is:

1. A pulsating pump having in combination connected p ates forming an interior chamber therebetween and a pulsating diaphragm located between said plates within said chamber, each of said plates provided with a passage leading into said chamber, the inner walls of said chamber channeled on their adjacent surfaces on o posite sides of the diaphragm to prevent t e' adherence of the diaphragm thereupon by suction.

2. A pulsating um'p having in combination a chambered case, a ulsating diaphragm located within the ciiamber of the case, said case provided with passages leading into said chamber on opposite sides of the diaphragm, and means to control the inlet into and the discharge from one of said passages, the interior Walls of said chamber channeled on t eir adjacent surfaces on opposite sides of the diaphragm to limit the movement of the diaphragm.

3. A pulsating tion a chambere case, a ulsating diaphragm located within the chamber of the case, said case provided with passa es leadinginto said chamber on opposite si es of the diaphragm, means to connect one of said passages withthe combustion chamber of an internal combustion engine, and means conv the interior walls of said nected with the other of said passages to control the admission and discharge therefrom, chamber channeled on their ad'acent surfaces on opposite sides of the diap agm to limit the movement of the diaphragm.

I, 4. A ulsating pump having in combina tion a c ambered case, and a pulsating dia phragm located within the chamber of the case the interior walls of the case channeled,

upon their ad'acent surfaces upon opposite sides; of said iaphragm for the purpose set ort 7 pump having in combina 5. A pulsating ump having in combination connected p ates forming an interior chamber therebetween and a pulsating diaphragm located within said chamber, the lnter-ior surfaces of said plates provided with channels or recesses upon opposite sides of the diaphragm for the purpose set forth.

6. A pulsating ump having in combina tion connected p ates forming an interior chamber therebetween and a pulsating diaphragm located between said plates within said chamber, each of said plates provided with a passa e leading into sald chamber, the adjacent walls of said plates provided with channels or recesses upon opposite sides of the diaphragm for the purpose set forth.

7. A pulsating ump having in combination connected p ates forming an interior chamber therebetween and a pulsating diaphragm located between said plates within passages, and means to control the inlet into and t e discharge from the channeled valve case, for the purpose set forth.

8. A pulsating ump having in combination connected p ates forming an interior chamber therebetween and a pulsating diaphragm located between said plates within said chamber, each of said plates provided with a passage leading into said chamber, the adjacent walls of said plate provided with channels or recesses upon opposite sides of the diaphragm, means to connect one of said passages with the combustion chamber of an 'internal combustion engine, a channeled valve case connected with the other of said passages to admit and to discharge liquid or air from the corresponding passage, and means to control the admission and the discharge into and from the said valve case.

In testimony whereof, I have signed this specification in the presence of two subscribmg witnesses.

ALANSO'N P. BRUSH.

N. S. WRIGHT, E. L. SCHWARTZ. 

